<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
    <style type="text/css">
        html,body{width: 100%}
        div{
            width: 100%;
            display: flex;
            position: absolute;
            bottom: 0;
            justify-content: space-between;
        }
        span{
            display: inline-block;
            width: 200px;
            height: 200px;
            background-color: antiquewhite;
            text-align: center;
            line-height: 200px;
        }
    </style>
</head>
<body>
  <div>
      <span>首页</span>
      <span>视频</span>
      <span>音频</span>
      <span>我的收藏</span>
  </div>
</body>
</html>